Electro-mechanism for operating safety razors



Dec. 1, 1931. A, A GRO-THE 1,834,096

ELECTRO-MECHANISM FOR OPERATING SAFETY RAZORS Filed NOV. 18. 1929 J jg?? @j E57 17 26 Z9 38297 Fraga Patented Dec. l, 1931A UN111:1,STATES PATENTOFFICE ARTHUR A. GROTIIE, OF OAK PARK, ILLINOIS, yAssIefNon To WILLIAM J. CAMERON, or Y f CHICAGO, ILLINOIS e i e f i nLEoTno-IIECHANISM'FOR OPERATING SAFETY RAzORs Application med November 18, 1929. serial No. 407,833.

My present invention' relates -to safety razors andit hasmore particular reference to a razor that is operated through the medium of vibrations caused by an electric current.

In the present device I have provided a coil, a portion of which is hollow, to receive a pendant armature that is caused to rapidly vib'rate when the. current is passing through Ythe coil. The post for carryingthe .razor or other tool head is mounted in such manner Vthat the vibrations of the armature are imparted to the tool, or the cutting blade, mounted in the head and thereby the tool or Lbladewill be givenva 'vabratory movement that is in a direction substantially along the line of the 'cutting edge. Thus, when the razor is moved across the fie'sh'in a direction transverse to the edge of the blade as is usual when shaving, the blade is vibrated longitudinally of its cutting edge so that there is a shearing or oblique cutting action upon the e hair.

The structure which I have devised is made and assembled in a manner so that it may be readily housed within a small handle or grip. While the parts are necessarily small they are nevertheless simple in structure and possess the quality of sturdiness. The device is novel in construction, is easy to manipulate, and it may be readily taken apart for inspection or repair. I prefer to carry out my invention and to accomplish the objects thereof in substantially the manner hereinafter fully described and as more particularly pointed out in the'claims. Reference will now be made.` to the accompanying drawings that form a part of this speciication.

In the drawings Figure 1 is a view in longitudinal section of my improved safety razor.

Figure 2 is a vertical side elevation viewed from the right side of Figure 1.

Figure 8 is a schematic view showing the layout of the electrical parts.

The drawings are to be understood as more trating a typical or preferred formein which my invention may be made, and in said drawings I have employed similar reference characters to designate like parts wherever they appear throughout the several views. The razor as shown herein preferably comprises a tubularvhandle orgrip 5,'made from suitable insulating `material such as bakelite having an apertured plug 6 in its lower end and the upper end oflithe handle is closed by a threaded plug 7,`forming one end of a spool for the winding ofthe coil.v The core 8 is hollow, as shown in Figure 1 with ,anfinsulating Hange 9 upon the lower end opposite the plug 7 and theV windings 10 extend around the core between theplug 7 and the flange9-` "l An iron bar 11 is mounted in the lower poi"- tion of the bore of the core and extends below thespool flange 9 as shownwhere itis reduced 1n dimension to provide an extension 12 that is screwed into the adjacent upper end of a stubl projecting from'abase 14 of insulating material.` The base lit is of disl-like shape and has a recess in its upper lface in which a cross-plate 15 that carries the stub 13 is imbedded or anchored.` v f A pair of regularly shaped terminalsV 16 and 17 are imbedded in the base 14 and have their ends extended upon opposite sides of the base, the terminal 16 being connected by` a wire or conductor 1 8 with one end of the coil V10. The opposite end' of the coil is vconnected by a wire or 'conductorflQ tothe bar 11.

A vibratoryarm 20 ismounted'on a screw 21 upon the lower portion of the stuhl?, in

the arm through which thescrew 21 passes, is made larger than the diameter of the screw and'l there isla coil spring 22 interposed'bet tween `the arm and the screw'headv so as to permit yielding vibiatorymotion of the arm.

In order to guide the arm and to maintain from the stub lthrough a `small hole in the arm.v or less schematic for the purpose of illus- The terminal 17 after entering the base 14 extends obliquely out of thesame in order to `esca-pe the head of screw 21 and upon its-inner end said terminal is provided with -a flat Athe manner shown in Figure 1*, and it has yits f upper portion disposed alongside the protruding portionof thebar 11. '-In` mounting,

spring Contact linger 24 that terminates adjacent the upper portion of the vibratory arm 20 where it is provided with a contact block 25 adapted to engage the contact block 26 upon the adjacent end of the arm 20.

The post 27 upon which the razor-head or other tool is mounted is of any desired construction, and means for mounting the post 27 consists of a spring plate 28 supported upon suitable spacers 29 so as to transversely bridge the central opening in the end plug 7 of the spool, the post being mounted centrally upon the bridge piece 28 and preferably in axial alinement with the bore of the core. A vibratory armature 30 is secured to and depends from the bridge plate 28 into the bore of the core and out of contact therewith in the manner shown in Figure l, and its lower or inner end is shouldered to provide an impact member 3l that has upon opposite sides the yieldable cushions or buffers 32. When assembled, the tool-post and the armature form continuations ot each other with a yieldable spring element supporting the same. The upper or inner end of the bar l1 is cut back or shouldered to provide an abutment orimpact-receiving element 33. A surface or coat of insulation 34 is placed upon the inner end of the bar 11 and its abutment member 33.

When the current is introduced to the coil the armature 30 is attracted and vibrates in the direction indicated by the arrow in Figure -1 so that the buffers will strike the interior of the core and the abutment or impact-receiving element 33 of the bar 11. The vibration is rapid, of course, and twists the bridge bar 28 in such manner that the post 27 is likewise vibrated. The vibration of the post is imparted to the tool holders and the razor blade carried thereby is given a movement parallel to the longitudinal cutting edge of the blade.

What I claim is 1. A device of the kind described comprising a hollow grip, a bored electromagnet core mounted in said grip and provided with an energizing winding, a yieldable element extending transversely across said bore, a vibratory armature within said bore and carried by said element, and a tool post secured to said element and extended outside said grip. l

2A device of the kind described comprising a` hollow grip, an electromagnet core mounted in said grip and provided with an Venergizing winding, and a metallic element mounted intermediate its ends for vibratory movement, a portion of said element being within said core and providing an armature and another portion of said element being extruded outside said grip and providing a tool post.

3. A device of the kind described comprising a hollow grip, an electromagnet core mounted in said grip and provided with an energizing winding, a metallic element mounted intermediate its ends for vibratory movement, a portion of said element being within said core and providing an armature and another portion of said element being extruded outside said grip and roviding a tool post, and a yieldable mem er interposed between the respective portions of said element. Y

- 4. A device of the kind described comprising a hollow grip, an electromagnet core mounted in said grip and provided with an energizing winding, a metallic element mounted intermediate its ends for vibratory movement, a portion of said element being within said core and providing an armature and another portion of said element being extended outside said grip and providing a tool post, and a flat spring extended across.. the bore of the core to which said element is secured intermediate its ends.

5. A device of the kind described comprising a hollow grip, a plug in an end of said grip, a hollow electromagnet core extending from the plug within the grip and provided with an energizing winding, a yieldable element carried by the plug and bridging the bore of the core, a vibratory armature carried by said yieldable element and extended.-

within the core, and a tool post carried by said yieldable element.

Signed at Chicago, Cook County, Illinois, the 21st day of October, 1929.

ARTHUR AGRCTHE. 

